The research team has pinpointed the cancer abnormality to a mutation in a gene called PIK3CA that results in a mutant protein, which may be an early cancer switch. By disrupting the mutated signaling pathway, the Case Western Reserve team, led by John Wang, PhD, inhibited the growth of cancer cells, opening the possibility to new cancer therapies. Their findings, "Gain of interaction with IRS1 by p110 helical domain mutants is crucial for their oncogenic functions," was published on May 2 in the journal Cancer Cell. Cancer arises from a single cell, which has mutated in a small number of genes because of random errors in the DNA replication process…